Use loop bound canon to forkify demosaic

• Use loop bound canon to forkify demosaic.

hercules_opt/src/loop_bound_canon.rs

@@ -47,8 +47,6 @@ pub fn canonicalize_single_loop_bounds(
 ) -> bool {
     let function = editor.func();
 
-    println!("canonicalizing {:?}", l.header);
-
     let Some(loop_condition) = get_loop_exit_conditions(function, l, control_subgraph) else {
         return false;
     };
@@ -66,7 +64,6 @@ pub fn canonicalize_single_loop_bounds(
     let ivs = compute_iv_ranges(editor, l, ivs, &loop_condition);
 
     if has_canonical_iv(editor, l, &ivs).is_some() {
-        // println!("has canon iv!");
         return false;
     }
 
@@ -78,7 +75,6 @@ pub fn canonicalize_single_loop_bounds(
 
     // Assume there is only one loop bound iv.
     if loop_bound_ivs.len() != 1 {
-        // println!("has multiple iv!");
         return false;
     }
 
@@ -225,25 +221,15 @@ pub fn canonicalize_single_loop_bounds(
     // If increment is negative (how in the world do we know that...)
     // Increment can be DefinetlyPostiive, Unknown, DefinetlyNegative.
 
-    // // First, massage loop condition to be <, because that is normal!
-    // Also includes
-    // editor.edit(|mut edit| {
-
-    // }
-    // Collect immediate IV users
-
     let update_expr_users: Vec<_> = editor
         .get_users(*update_expression)
         .filter(|node| *node != iv.phi() && *node != condition_node)
         .collect();
-    // println!("update_expr_users: {:?}", update_expr_users);
     let iv_phi_users: Vec<_> = editor
         .get_users(iv.phi())
         .filter(|node| *node != iv.phi() && *node != *update_expression)
         .collect();
 
-    // println!(" iv_phi_users: {:?}",  iv_phi_users);
-
     let result = editor.edit(|mut edit| {
         // 4) Second, change loop IV to go from 0..N.
         // we subtract off init from init and dc_bound_node,
@@ -270,7 +256,6 @@ pub fn canonicalize_single_loop_bounds(
                 edit.replace_all_uses_where(bound_id, new_condition, |usee| *usee == binop_node)?;
         }
 
-
         // for user in update_expr_users {
         //     let new_user = Node::Binary {
         //         left: user,
@@ -281,7 +266,7 @@ pub fn canonicalize_single_loop_bounds(
         //     edit = edit.replace_all_uses(user, new_user)?;
         // }
 
-        // for 
+        // for
 
         // Add the offset back to users of the IV update expression
         let new_user = Node::Binary {
@@ -311,6 +296,5 @@ pub fn canonicalize_single_loop_bounds(
         Ok(edit)
     });
 
-    println!("result: {:?}", result);
     return result;
 }